Mission to the Forgotten Planets
Before the Pluto fiasco, two asteroids were stripped of planet status. 03.11.2008
Rearranging Stars to Communicate with Aliens
A proposal to create special constellations that nature would never produce 02.08.2008
67. Mars Rover Delves Into Crater
01.11.2008
Inside the Search for Extraterrestrial Life
It starts with water and ends with intelligent aliens—hopefully. 12.25.2007
Scientist of the Year: David Charbonneau
His research heats up the search for alien life—and finds some amazing planets along the way. 12.06.2007
Aliens Among Us
Do we share Earth with alternative life forms? 06.27.2007
Psychedelic Space Plants
Scientists predict plants with wild colors on distant planets. 04.11.2007
The Hunt for Other Earths Heats Up
We could hit the jackpot by 2010. 04.10.2007
Like Water for Mars
Evidence of water flowing on our most similar neighbor 02.25.2007
Sky Lights
Among a sea of white and red, astronomers search for the color of life 02.23.2007
Whatever Happened to... Project Blue Book?
The government gave up on alien tall tales. 02.08.2007
20 Things You Didn't Know About... Aliens
Where are they lurking, when will we find them, and will pictures of naked people impress them? 01.07.2007
Did Life Begin In Space?
Interstellar organic molecules suggest that Earth may have been seeded by the cosmos. 11.09.2006
Drake's Brave Guess
A group of astronomers who met in 1961 to figure out the odds of finding intelligent life in our own galaxy turn out to have been really smart and really lucky. 05.27.2006
Life on Mars
Minerals suggest microbes once flourished. 04.24.2006
Think Tank
Top scientists pinpoint the critical developments of the last 25 years and predict wonders yet to come 08.08.2005
Cassini Watch: Is Enceladus Alive?
06.05.2005
Life on Mars
05.01.2005
92: Life's Fifth Element Came From Meteors
01.03.2005
26: Molecules of Life Brew Between Stars
01.02.2005
Seeding the Universe
The search for life on Mars could be a bit complicated by the hitchhikers on our rovers 10.01.2004
Our Favorite Martians
08.02.2004
Sky Lights
Does the secret of extraterrestrial life lie deep within the stars and planets? 07.25.2004
Astronomy
01.02.2004
To Catch a Comet
In January a clever probe will meet up with a flying rock that may hold the secret to life on Earth 10.28.2003
Star Trek
NASA thinks we can find another Earth in another nearby star. When we do, how can we possibly travel light-years to get there? It might not be as hard as you'd think . . . 08.01.2003
The Optical Search for Extraterrestrial Intelligence
The Optical Search for Extraterrestrial Intelligence 11.01.2002
A Spectral Look at an Alien World
02.01.2002
Did Life on Earth Come From Mars?
Chunks of planets were flying all over the place when the solar system was young—and some may have carried hitchhikers 08.01.2001
Interstellar Seeds of Life
07.01.2001
Why is There Life?
Because, says Britain's Astronomer Royal, you happen to be in the right universe 11.01.2000
Titan's Secret Seas
11.01.1999
Life From Mars
More evidence for fossilized bacteria in a meteorite from Mars. 06.01.1999
Who's Out There?
The search for intelligent life in outer space is going so well, scientists need a little help from you and your home computer 04.01.1999
Who's Out There?
The search for intelligent life in outer space needs a little help from you and your home computer. 04.01.1999
Water World
Beneath the six-mile-thick shell of ice that encases the moon Europa may lie a vast liquid ocean. And in its dark, alient depths, we may--if we look--find something swimming alive. 05.01.1997
The Ulitmate Suburb
Hints of fossilized microbes have rekindled NASA's hopes for a community on Mars. 05.01.1997
Looking for Life in All the Wrong Places
Microbes from the least hospitable places on Earth, could seed the universe with life. 05.01.1997
Questionable Life
Finding evidence of ancient life on Mars may be even more difficult than we thought. 02.01.1997
Find of the Century?
A meteorite bearing tantalizing evidence of life on Mars makes a big splash. 01.01.1997
Yes, We Have No Yellow Fruit
Are aliens really coming to Earth? 11.01.1996
Jack Farmer, Exopaleontologist
Sometime in the next century, he hopes to find fossil microbes on Mars. 10.01.1995
Is Anyone Out There?
Surely, out of the countless spheres in the universe, one harbors something that can say hello. 11.01.1992